User-friendly jewelry chain

ABSTRACT

A user-friendly jewelry chain having a chain, a charm, a stop ring and a clasp; the stop ring has a flexible positioning component; the charm has a positioning through-hole. The charm is sleeved on the stop ring and fixedly positioned on the stop ring. The clasp has a male end, a female end, a locking sleeve, a flexible pin component and a flat spring component. The female end is connected to the chain; the flexible pin component and the flat spring component are respectively mounted on the female end. A pin slot and a flat spring slot are formed in the locking sleeve. The pin slot has horizontal slots and a vertical slot. The female end is sleeved into the locking sleeve. The flexible pin component and flat spring component of the female end respectively act on slot walls of the vertical slot and the flat spring slot.

BACKGROUND OF THE INVENTION

The present invention relates to a chain ornament, particularly ajewelry chain ornament strung with charms.

Jewelry chain product such as hand chain, necklace and so forthbasically comprises a chain, charms strung onto the chain and aclosed-loop clasp for securing two ends of the chain together. In orderto allow the charms to be fairly distributed on the chain, a stop ringis generally used to separate the charms on the chain. There are twomethods of separating the charms by means of the stop ring. One of themethods is providing an external screw thread on an outer surface of thestop ring and an internal screw thread in an assembly opening of each ofthe charms, and passing the charms through the stop ring and preventingthe charms from passing the stop ring on their own by means of theexternal screw thread of the stop ring and the internal screw threads ofthe charms. However, this method requires multiple rotations of thecharms during assembly before the charms can pass through the stop ring,thus consuming much time and energy for assembly, and the productivityis low. Screw threads are easily worn out while in use, reducing thelifespan of the jewelry chain. The second method is providing apositioning portion in the stop ring, and a positioning through-hole oneach of the charms which allows passage of the positioning portion ofthe stop ring at a predefined position. However, during assembly, thismethod requires alignment of the positioning through-hole at one end ofthe charm and the positioning portion of the stop ring to position thestop ring in the through-hole of the charm and then rotating the charmso that the positioning through-hole at another end of the charm alignswith the positioning portion of the stop ring before the charm can bepassed through the stop ring to be strung onto the chain. This methodrequires the charm to be aligned with the stop ring for multiple timesduring assembly, thus assembly is inconvenient. When in use, thepositioning through-hole of the charm may accidentally align with thepositioning portion of the stop ring so that the charm may pass throughthe stop ring on its own, thus user needs to pass the charm through thestop ring again, resulting in inconvenience in use. Such clasp whichsecure two ends of the chain to form a closed-loop has the followingdisadvantages. First, the male end and the female end are not securedtogether securely and are easy to be detached. Second, the structures ofthe male end and the female end are complicated and are not good forproduction. Third, assembling and securing the male end and the femaleend involve a lot of steps, thus assembly is inconvenient. In view ofthe aforesaid disadvantages now present in the prior art, it is verynecessary to redevelop and redesign the clasp part of the jewelry chain.

BRIEF SUMMARY OF THE INVENTION

An object of the present invention is to provide a user-friendly jewelrychain which is simple in structure, scientifically designed, capable ofeliminating the need for alignment when mounting or adjusting thecharms, convenient and quick to use, and equipped with a clasp withreliable positioning effect so that it will not be detached when worn.

To achieve this, the present invention adopts the following technicalproposal:

A user-friendly jewelry chain comprising a chain, at least one charm, atleast one stop ring which can be fixed on the chain and a clasp,characterized in that the stop ring is provided with a flexiblepositioning component; the charm is provided with a positioningthrough-hole which allows the chain and the stop ring to pass through;the charm is sleeved on the stop ring, and the charm is fixedlypositioned on the stop ring by the flexible positioning component actingon a hole wall of the positioning through-hole.

The clasp comprises a male end, a female end, a locking sleeve, aflexible pin component and a flat spring component; the female end isconnected to one end of the chain; the flexible pin component and theflat spring component are respectively mounted on the female end; thelocking sleeve is of a hollow structure, and a pin slot and a flatspring slot are formed inside one end of the locking sleeve; the pinslot comprises horizontal slots and a vertical slot, and the horizontalslots and the vertical slot are interlinked; the female end is sleevedinto one end of the locking sleeve; the flexible pin component on thefemale end enters from the horizontal slots and slides into the verticalslot along the horizontal slots; rotation of the locking sleeve causesthe flexible pin component to act on a slot wall of the vertical slotand the flat spring component on the female end to embed into the flatspring slot of the locking sleeve and act on a slot wall of the flatspring slot, so that the chain, the female end and the locking sleeveare assembled together.

The positioning through-hole of the charm is formed by an inner annularslot and a positioning ring disposed at each of two ends of the innerannular slot; the flexible positioning component acts on a slot wall ofinner annular slot of the positioning through-hole.

Positioning blades are also provided on the inner annular slot of thepositioning through-hole.

To make the structure of the present invention more reasonable, the pinslot of the present invention has three embodiments: First, one end ofthe locking sleeve is provided with a pin slot, and the pin slotcomprises horizontal slots, a vertical slot and a locking slot; Second,one end of the locking sleeve is provided with two pin slots opposite toeach other, and the pin slot comprises horizontal slots, a vertical slotand a locking slot; Third, one end of the locking sleeve is providedwith a pin slot, and the pin slot comprises horizontal slots, a verticalslot and a locking slot; wherein the vertical slot is an annular slotalong an inner periphery of the locking sleeve; a plurality of lockingslots are evenly disposed in the annular slot, and the horizontal slotsand the locking slot are interlinked.

To make the structure of the present invention more reasonable, thevertical slot is deeper than the horizontal slots. The locking slot isdeeper than the vertical slot.

As the present invention adopts the aforesaid technical proposal, it canachieve the following technical effects:

(1) The present invention provides a flexible positioning component onthe stop ring, and provides a positioning through-hole on the charm, sothat when the charm is strung onto the chain, by pushing the charm andthereby compressing the flexible positioning component of the stop ring,the charm can pass through the stop ring and be strung onto the chain.Each of the charms is strung onto the chain accordingly. When a certainnumber of charms are strung onto the chain, one of the charms can besleeved on the stop ring, so that the flexible positioning component onthe stop ring can restore to its original state in the inner annularslot, thereby separating other charms. In the process of stringing, thecharms of the present invention do not need to rotate several times likethreads to pass the stop ring.

Besides, there is no need to provide positioning portions on the stopring of the present invention to align with corresponding positioningportions of the charms when stringing the charms. Therefore, the presentinvention is more effective in assembling, more convenient inassembling, and more convenient to use. The flexible positioningcomponent will not be worn out easily, thus having a longer lifespan.

(2) The present invention makes use of the flexible pin component andthe flat spring component, so that after rotating the locking sleeve,the flat spring component on the female end acts on the flat spring slotto achieve locking in horizontal direction; the flexible pin componenton the female end acts on the vertical slot of the pin slot to preventthe female end from detaching due to rotation of the locking sleeve whenworn. As a result, when a user wears the jewelry chain of the presentinvention, the clasp will not detach no matter how hard it is shaked.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates the structure of the present invention.

FIG. 2 illustrates a side structure of the charm of the presentinvention.

FIG. 3 illustrates a sectional structural view of a first embodiment ofthe charm of the present invention along A-A of FIG. 2.

FIG. 4 illustrates a sectional structural view of a second embodiment ofthe charm of the present invention along A-A of FIG. 2.

FIG. 5 illustrates an end face structure of the charm of the presentinvention.

FIG. 6 illustrates a sectional structural view of a first embodiment ofthe charm of the present invention along B-B of FIG. 5.

FIG. 7 illustrates a sectional structural view of a second embodiment ofthe charm of the present invention along B-B of FIG. 5.

FIG. 8 illustrates a side structure of the stop ring of the presentinvention.

FIG. 9 illustrates an end face structure of the stop ring of the presentinvention.

FIG. 10 illustrates a sectional structural view of the present inventionalong C-C of FIG. 9.

FIG. 11 illustrates an exploded view of the clasp of the presentinvention.

FIG. 12 illustrates the structure of the female end of the presentinvention.

FIG. 13 illustrates the structure of the jewelry chain connector of thepresent invention.

FIG. 14 illustrates the structure of the locking sleeve of the presentinvention.

FIG. 15 illustrates a sectional structure view of the present inventionalong D-D of FIG. 14.

FIG. 16 illustrates the structure of the locking sleeve of the presentinvention.

FIG. 16-1 illustrates a sectional structural view of the presentinvention along E-E of FIG. 16.

FIG. 17 illustrates the structure of the flat spring of the presentinvention.

FIG. 18 illustrates a sectional structural view of the female end of thepresent invention.

FIG. 19 illustrates a sectional structural view of the male end of thepresent invention.

FIG. 20 illustrates a sectional structural view of the present inventionafter the clasp is fastened.

FIG. 21 illustrates another sectional structural view of the presentinvention after the clasp is fastened.

FIG. 22 illustrates the structure of the flexible positioning componentof the present invention.

FIG. 23 illustrates a sectional structural view of a first embodiment ofthe flexible positioning component of the present invention along F-F ofFIG. 22.

FIG. 24 illustrates a sectional structural view of a second embodimentof the flexible positioning component of the present invention along F-Fof FIG. 22.

FIG. 25 illustrates the structure of the flexible pin of the presentinvention.

FIG. 26 illustrates a sectional structural view of a first embodiment ofthe flexible pin of the present invention along G-G of FIG. 25.

FIG. 27 illustrates a sectional structural view of a second embodimentof the flexible pin of the present invention along G-G of FIG. 25.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIG. 1, the user-friendly jewelry chain of the presentinvention comprises a chain 1, at least one charm 2, at least one stopring 3 which can be fixed on the chain 1 and a clasp. The stop ring 3 isprovided with a flexible positioning component 7. As shown in FIGS. 8, 9and 10, the centre of the end face of stop ring 3 is provided with oropened with a perforation 31. The perforation 31 is in a shape whichallows the chain 1 to pass through, and the perforation 31 has adiameter slightly larger than the cross sectional diameter of the chain1, so that the stop ring 3 can be easily and freely strung onto thechain 1. As shown in FIGS. 2 to 7, the charm 2 is provided with apositioning through-hole 21 which allows the chain 1 and the stop ring 3to pass through. As shown in FIG. 1, the charm 2 is sleeved on the stopring 3, and the charm 2 is fixedly positioned on the stop ring 3 by theflexible positioning component 7 acting on a hole wall of thepositioning through-hole 21. When the charm 2 is strung onto the presentinvention, by pushing the charm 2 and thereby compressing the flexiblepositioning component 7 of the stop ring 3, the charm 2 can pass throughthe stop ring 3 and be strung onto the chain 1.

As shown in FIGS. 1 and 11, the clasp comprises a male end 4, a femaleend 5, a locking sleeve 6, a flexible pin component 8 and a flat springcomponent 9. The female end 5 is connected to one end of the chain 1. Asshown in FIG. 12, the flexible pin component 8 and the flat springcomponent 9 are respectively mounted on the female end 5. As shown inFIGS. 14, 15 and 16-1, the locking sleeve 6 is of a hollow structure,and a pin slot 10 and a flat spring slot 61 are formed inside one end ofthe locking sleeve 6. The pin slot 10 comprises horizontal slots 101 anda vertical slot 102, and the horizontal slots 101 and the vertical slot102 are interlinked. As shown in FIGS. 20 and 21, the female end 5 issleeved into one end of the locking sleeve 6. The flexible pin component8 on the female end 5 enters from the horizontal slots 101 and slidesinto the vertical slot 102 along the horizontal slots 101. Rotation ofthe locking sleeve 6 causes the flexible pin component 8 to act on aslot wall of the vertical slot 102 and the flat spring component 9 onthe female end 5 to embed into the flat spring slot 61 of the lockingsleeve 6 and act on a slot wall of the flat spring slot 61, so that thechain 1, the female end 5 and the locking sleeve 6 are assembledtogether. The flat spring component 9 on the female end 5 acts on theflat spring slot 61 to achieve locking in horizontal direction, and theflexible pin component 8 on the female end 5 acts on the vertical slot102 of the pin slot 10 to prevent the female end 5 from detaching due torotation of the locking sleeve 6 when worn. As a result, when a userwears the jewelry chain of the present invention, the clasp will notdetach no matter how hard it is shaked.

To make the structure of the present invention more reasonable, as shownin FIGS. 2 to 6, the positioning through-hole 21 of the charm 2 isformed by an inner annular slot 22 and a positioning ring 23 disposed ateach of two ends of the inner annular slot 22. The flexible positioningcomponent 7 acts on a slot wall of the inner annular slot 22 of thepositioning through-hole 21, so that the stop ring 3 of the presentinvention can enter from the positioning ring 23 at one end of the charm2, then the flexible positioning component 7 of the stop ring 3 canrestore to its original state in the inner annular slot 22 so that thecharm 2 can be sleeved on the stop ring 3 and will not detach from thestop ring 3 except by human action.

To moderate the amplitude of swing of the stop ring 3 in the positioningthrough-hole 21, as shown in FIGS. 2, 4, 5 and 7, positioning blades 24are also provided on the inner annular slot 22 of the positioningthrough-hole 21. The positioning blades 24 encircle the positioning ring23 and are evenly distributed along the inner annular slot 22.

To make the structure of the present invention more reasonable andfurther optimize its positioning effect, as shown in FIG. 12, theflexible pin component 8 comprises two flexible pins 81, and the twoflexible pins 81 are symmetrically mounted on the female end 5.

To make the structure of the present invention more reasonable andfurther optimize its positioning effect, as shown in FIG. 12, the flatspring component 9 comprises two flat springs 91. As shown in FIG. 17,each of the flat springs 91 has one end which forms a mounting portion92 and another end which bends to form a flexible snap portion 93. Thetwo flat springs 91 are symmetrically mounted on the female end 5through their respective mounting portions 92. As shown in FIG. 21, whenthe female end 5 of the present invention is sleeved into the lockingsleeve 6, the flexible snap portions 93 of the flat springs 9 act on theflat spring slot 61 of the locking sleeve 6 so as to secure the femaleend 5 in the locking sleeve 6.

To make the structure of the present invention more reasonable, as shownin FIG. 15, one end of the locking sleeve 6 is provided with the pinslot 10 and the flat spring slot 61. The pin slot 10 is formed by twohorizontal slots 101 and a vertical slot 102. The vertical slot 102 andthe flat spring slot 61 are annular slots along an inner periphery ofthe locking sleeve 6. The two horizontal slots 101 are symmetricallyarranged and pass through the flat spring slot 61 respectively tointerlink with the vertical slot 102. By means of this design, no matterhow the locking sleeve 6 is rotated, even if the flexible pin component8 aligns with the horizontal slots 101 by chance, the female end 5 stillcannot detach from the locking sleeve 6 under the effect of the flatspring component 9. Similary, when the flat spring component 9 alignswith the horizontal slots 101, under the effect of the flexible pincomponent 8, the female end 5 cannot detach from the locking sleeve 6.Only when the flexible pin component 8 aligns with the horizontal slot101 and a certain pulling force is exerted could the flat springcomponent 9 be compressed and thereby allowing the flexible pincomponent 8 to slide out along the horizontal slots 101. Besides, underthe effect of the pulling force, the flat spring component 9 is detachedfrom the flat spring slot 61, which makes the female end 5 detach fromthe locking sleeve 6. To embed the flat spring component 9 on the femaleend 5 of the present invention into the flat spring slot 61, as shown inFIGS. 14 and 15, the locking sleeve 6 is provided with shallow slots 64which allows the passage of the flat spring. The shallow slots 64 andthe annular slot forming the flat spring slot 61 are interlinked.

As shown in FIGS. 15, 16 and 16-1, an interlinking part of thehorizontal slots 101 and the vertical slot 102 is provided with fourslots 103 which are distributed in a cross shape in the vertical slot102. With the slots 103, when the flexible pin component 8 of thepresent invention slides from the horizontal slots 101 into theinterlinking part of the horizontal slots 101 and the vertical slot 102,the flexible pin component 8 cooperates with the slots 103 to makenoises and stop the flexible pin component 8 from sliding into thevertical slot 102 in one go. The user needs to apply force slightly toretract the flexible pin component 8 from the slots 103 and enter thevertical slot 102. Ultimately the flexible pin component 8 is embeddedinto the slots 103 in the vertical slot 102, making noises to inform theuser that the female end 5 has already been secured in the lockingsleeve 6. With this design, the user can precisely know the slidingtrack of the flexible pin component 8.

To make the structure of the present invention more reasonable, as shownin FIGS. 11 and 21, the present invention further comprises a fixed ring20 and a jewelry chain connector 30. As shown in FIG. 13, one end of thejewelry chain connector 30 is provided with a jewelry chain connectingslot 40, and the jewelry chain connector 30 is connected by the jewelrychain connecting slot 40 to one end of the chain 1. Another end of thejewelry chain connector 30 is provided with a coupling spindle 302 witha limiting head 301. As shown in FIG. 21, the fixed ring 20 is sleevedon the coupling spindle 302; the female end 5 is provided with amounting slot 51 at a rear end thereof for receiving the limiting head301 and embedding the fixed ring 20. The jewelry chain connector 30 ismounted in the mounting slot 51 through the limiting head 301, and thefixed ring 20 is fixedly embedded in a rabbet of the mounting slot 51,so that it is rotatably connected with the female end 5. The female end5 connects to one end of the chain 1 by the jewelry chain connectingslot 40.

To make the structure of the present invention more reasonable, as shownin FIGS. 11 and 19, the male end 4 has an outer surface which isprovided with limiting stoppers 41. As shown in FIG. 1, the male end 4is connected to another end of the chain 1. As shown in FIGS. 11, 15 and16-1, another end of the locking sleeve 6 is provided with a limitingcollar 62. The limiting collar 62 is provided with grooves 63 forcooperating with the limiting stoppers 41. As shown in FIGS. 12 and 18,a front end of the female end 5 is respectively provided with anassembly slot 52 and notches 53 which cooperate with the limitingstoppers 41. As shown in FIGS. 20 and 21, the male end 4 passes throughthe limiting collar 62 of the locking sleeve 6 to embed in the assemblyslot 52 of the female end 5, thus the limiting collar 62 of the lockingsleeve 6 fixedly connects the male end 4 and the female end 5 to jointwo ends of the chain 1 together.

As shown in FIGS. 22 to 27, the flexible positioning component 7 and theflexible pins 81 respectively comprise a pin cylinder 71, a returnspring 72 and an abutting means 73. The return spring 72 is mounted inthe pin cylinder 71. The abutting means 73 is provided at an end of thepin cylinder 71. An end of the return spring 72 abuts against theabutting means 73. The abutting means 73 is a metal ball or a metal pin.

As shown in FIGS. 23 and 24, the return spring 72 of the flexiblepositioning component 7 is mounted in the pin cylinder 71. Two ends ofthe pin cylinder 71 are each provided with an abutting means 73. Twoends of the return spring 72 each abuts against the abutting means 73.As shown in FIG. 1, the pin cylinder 71 of the flexible positioningcomponent 7 passes through the stop ring 3 and the chain 1 and ismounted on the stop ring 3. To facilitate assembly, as shown in FIGS. 9and 10, the stop ring 3 is provided with assembly holes 32. The chain 1could also be provided with assembly holes at corresponding positions.

The abutting means 73 of the present invention, as shown in FIG. 23, canbe a metal ball 73. Two ends of the pin cylinder 71 are each providedwith a limiting portion 711. The metal balls 73 are mounted in the pincylinder 71 by the limiting portions 711. The abutting means 73 of thepresent invention, as shown in FIG. 24, can also be a metal pin 73. Themetal pin 73 is provided with a stop block 731 at an inner side thereof.Two ends of the pin cylinder 71 are each provided with a limitingportion 711. The metal pins 73 cooperate with the limiting portions 711through the stop blocks 731 to be mounted in the pin cylinder 71.

As shown in FIG. 25, the pin cylinder 71 of the flexible pin 81 isprovided with a cylindrical positioning portion 712 at an upper portionthereof. The pin cylinder 71 is provided with a terete receiving portion713 at a lower portion thereof which enables the terete insertion part713 to be securely mounted on the female end 5 when mounting theflexible pin 81 of the present invention. As shown in FIG. 20, thecylindrical positioning portion 712 protrudes from the female end 5.When the female end 5 is sleeved on the locking sleeve 6, thecylindrical positioning portion 712 acts on the slot wall of thevertical slot 102 of the pin slot 10 to prevent the female end 5 fromdetaching from the locking sleeve 6. The return spring 72 of theflexible pin 81 is mounted in the pin cylinder 71. The end of the pincylinder 71 is provided with the abutting means 73. The return spring 72has one end which abuts against the abutting means 73 and another endwhich abuts against a bottom of the pin cylinder 71. As shown in FIG.26, the abutting means 73 can be a metal ball 73. The pin cylinder 71 isprovided with a limiting portion 711 at one end. The metal ball 73 ismounted in the pin cylinder 71 through the limiting portion 711. Asshown in FIG. 27, the abutting means 73 can also be a metal pin 73. Themetal pin 73 is provided with a stop block 731 at an inner side thereof.The pin cylinder 71 is provided with a limiting portion 711 at one end.The metal pin 73 cooperates with the limiting portion 711 through thestop block 731 to be mounted in the pin cylinder 71.

To make the structure of the present invention more reasonable, as shownin FIGS. 1, 19 and 21, one end of the male end 4 is provided with thejewelry chain connecting groove 40. One end of the chain 1 is mounted inthe jewelry chain connecting groove 40 of the male end 4. Another end ofthe male end 4 is embedded with a magnetic block 50. As shown in FIG.21, the assembly slot 52 at one end of the female end 5 is also embeddedwith a magnetic block 50 at a bottom thereof. Through the magneticreaction of the magnetic blocks 50, when assembling the male end 4 andthe female end 5, it is easier to align the holes, so that assembly ismore convenient.

What is claimed is:
 1. A user-friendly jewelry chain comprising a chain(1), at least one charm (2), at least one stop ring (3) which can befixed on the chain (1) and a clasp, characterized in that the stop ring(3) is provided with a flexible positioning component (7); the charm (2)is provided with a positioning through-hole (21) which allows the chain(1) and the stop ring (3) to pass through; the charm (2) is sleeved onthe stop ring (3), and the charm (2) is fixedly positioned on the stopring (3) by the flexible positioning component (7) acting on a hole wallof the positioning through-hole (21); the clasp comprises a male end(4), a female end (5), a locking sleeve (6), a flexible pin component(8) and a flat spring component (9); the female end (5) is connected toone end of the chain (1); the flexible pin component (8) and the flatspring component (9) are respectively mounted on the female end (5); thelocking sleeve (6) is of a hollow structure, and a pin slot (10) and aflat spring slot (61) are formed inside one end of the locking sleeve(6); the pin slot (10) comprises horizontal slots (101) and a verticalslot (102), and the horizontal slots (101) and the vertical slot (102)are interlinked; the female end (5) is sleeved into one end of thelocking sleeve (6); the flexible pin component (8) on the female end (5)enters from the horizontal slots (101) and slides into the vertical slot(102) along the horizontal slots (101); rotation of the locking sleeve(6) causes the flexible pin component (8) to act on a slot wall of thevertical slot (102) and the flat spring component (9) on the female end(5) to embed into the flat spring slot (61) of the locking sleeve (6)and act on a slot wall of the flat spring slot (61), so that the chain(1), the female end (5) and the locking sleeve (6) are assembledtogether.
 2. The user-friendly jewelry chain as in claim 1,characterized in that the positioning through-hole (21) of the charm (2)is formed by an inner annular slot (22) and a positioning ring (23)disposed at each of two ends of the inner annular slot (22); theflexible positioning component (7) acts on a slot wall of inner annularslot (22) of the positioning through-hole (21).
 3. The user-friendlyjewelry chain as in claim 2, characterized in that positioning blades(24) are also provided on the inner annular slot (22) of the positioningthrough-hole (21).
 4. The user-friendly jewelry chain as in claim 1,characterized in that the flexible pin component (8) comprises twoflexible pins (81), and the two flexible pins (81) are symmetricallymounted on the female end (5).
 5. The user-friendly jewelry chain as inclaim 1, characterized in that the flat spring component (9) comprisestwo flat springs (91), each of the flat springs (91) has one end whichforms a mounting portion (92) and another end which bends to form aflexible snap portion (93); the two flat springs (91) are symmetricallymounted on the female end (5) through their respective mounting portions(92).
 6. The user-friendly jewelry chain as in claim 1, characterized inthat one end of the locking sleeve (6) is provided with the pin slot(10) and the flat spring slot (61); the pin slot (10) is formed by twohorizontal slots (101) and a vertical slot (102); the vertical slot(102) and the flat spring slot (61) are annular slots along an innerperiphery of the locking sleeve (6); the two horizontal slots (101) aresymmetrically arranged and pass through the flat spring slot (61)respectively to interlink with the vertical slot (102).
 7. Theuser-friendly jewelry chain as in claim 6, characterized in that aninterlinking part of the horizontal slots (101) and the vertical slot(102) is provided with four slots (103) which are distributed in a crossshape in the vertical slot (102).
 8. The user-friendly jewelry chain asin claim 1, characterized in that it further comprises a fixed ring (20)and a jewelry chain connector (30); one end of the jewelry chainconnector (30) is provided with a jewelry chain connecting slot (40),and the jewelry chain connector (30) is connected by the jewelry chainconnecting slot (40) to one end of the chain (1); another end of thejewelry chain connector (30) is provided with a coupling spindle (302)with a limiting head (301); the fixed ring (20) is sleeved on thecoupling spindle (302); the female end (5) is provided with a mountingslot (51) at a rear end thereof for receiving the limiting head (301)and embedding the fixed ring (20); the jewelry chain connector (30) ismounted in the mounting slot (51) through its limiting head (301), andthe fixed ring (20) is fixedly embedded in a rabbet of the mounting slot(51), so that it is rotatably connected with the female end (5).
 9. Theuser-friendly jewelry chain as in claim 1, characterized in that themale end (4) has an outer surface which is provided with limitingstoppers (41); the male end (4) is connected to another end of the chain(1); another end of the locking sleeve (6) is provided with a limitingcollar (62), and the limiting collar (62) is provided with grooves (63)for cooperating with the limiting stoppers (41); a front end of thefemale end (5) is respectively provided with an assembly slot (52) andnotches (53) which cooperate with the limiting stoppers (41); the maleend (4) passes through the limiting collar (62) of the locking sleeve(6) to embed in the assembly slot (52) of the female end (5), thus thelimiting collar (62) of the locking sleeve (6) fixedly connects the maleend (4) and the female end (5) to join two ends of the chain (1)together.
 10. The user-friendly jewelry chain as in claim 4,characterized in that the flexible positioning component (7) and theflexible pins (81) respectively comprise a pin cylinder (71), a returnspring (72) and an abutting means (73); the return spring (72) ismounted in the pin cylinder (71); the abutting means (73) is provided atan end of the pin cylinder (71); an end of the return spring (72) abutsagainst the abutting means (73); the abutting means (73) is a metal ballor a metal pin.